TECHNICAL MANUAL
envirotronics "TempSentry"
Bi-directional Temperature Limit Controller


TempSentry Photo

Fourth Edition
July 15, 1994

Download Instruction Booklet in MS-Word7 format.



TABLE OF CONTENTS

PURPOSE
DESCRIPTION
INSTALLATION & WIRING
OPERATION

CIRCUIT ANALYSIS

Measuring Circuit
Linearizer Circuit
Scaling Circuit
DVM Circuit
Display Mode Selector Circuitry
Alarm Circuitry
Power Supply Circuits
Output Circuits

HANDLING ELECTRICAL INTERFERENCE

CALIBRATION PROCEDURE

Field Calibration Instructions
Test Bench Calibration Method

REPLACEMENT PARTS LISTS

TempSentry Assy
Analog PCB Assy
Digital PCB Assy
DVM PCB Assy
Control PCB Assy
Relay Output PCB Assy

ENGINEERING DRAWINGS

Installation and Wiring Diagram
Schematic Diagrams
PCB Component Layout Diagrams See Parts List





PURPOSE

This device is designed as a precision hi/lo temperature limit switch for environmental and reliability test chambers. Whenever the measured temperature strays above or below a preset "normal" range, an output switches to the "off" state to disable either the heating system or the cooling system. A third "auxiliary" output may be used either to operate remote alarm devices, or to remove power from equipment under test within the chamber. Visual LIMIT indications and an audible warning signal are provided, and the output is held off until manually reset by the user (automatic reset is a user-selected option).

DESCRIPTION

This device is packaged as a single, panel-mounted component, consisting of printed circuit assemblies housed in a painted and anodized aluminum case. Front panel controls and indicators include:

The controller is designed for use with ISA type T (copper vs constantan) thermocouples, with a measuring range of -125°F to +375°F. Electronic cold junction compensation is provided, and the input is unaffected by sensor leadwire resistance. In the event of an open sensor circuit, the controller will produce a flashing "0" temperature indication, and a flashing SENSOR warning. A special fail-safe circuit also disables both the heating and cooling outputs, assuring that both systems will remain inoperative until protection is restored. The indicating accuracy of the controller is +/-.25%. The switching accuracy is mainly a function of its setability; about +/-1%.

The outputs of the controller consist of three mechanical 1P2T relay contacts, rated 10-amps at 250vac maximum. These relays are energized during all periods of normal operation, and drop out whenever a limit is exceeded, or when power is removed from the equipment.

Input power requirements are 3.5VA max at 110/120vac or 208/240vac, 50/60 Hz. All connections are made at terminal blocks on the back of the unit.

INSTALLATION & WIRING

Please refer to Drawing No. 470606

Install the controller at a location which is convenient to system wiring, reasonably free of vibration and temperature extremes, and accessible to equipment operators. The controller is normally panel-mounted in a 3-11/16" x 8-3/16" cutout, using special mounting clamps (p/n 352052). As shown on Drawing No. 470606, the controller normally protrudes 6-1/4" behind the face of the mounting panel; an additional 1-1/2" clearance behind the unit will be required for the relay output board and its associated wiring.

Connect an ISA type T thermocouple to the SENSOR terminal block in the upper left-hand corner of the controller. Use only type "XT" (copper vs constantan) thermocouple extension wire between the sensor and this terminal block, and observe the color code indicated below each terminal. The controller is not affected by leadwire resistances less than 1000-ohms.

Connect the input power to the terminal block in the lower left-hand corner of the controller, as follows:


110/120vac circuits
208/240vac circuits
Line to terminals 1 & 2
Com to terminals 3 & 4
Ground to terminal 5 ("GND")
L1 to terminal 1
jumper to terminals 2 & 3
L2 to terminal 4
Ground to terminal 5 ("GND")



Jumpers on the relay output board permit user-selection certain operating characteristics. The AUX relay may be used to control power to test specimens, or to operate remote alarms. To pulse a remote alarm device, move the AUX jumper to the "Alarm" position. If the controller is used in the manually reset mode, it will normally start-up in the "tripped" condition. If the equipment can be permitted to restart itself when power is restored, move the POWER-UP jumper to the "Automatic" position. But if the alarms should trip on power failures, but not in connection with routine on-off switching, connect the instrument to the main power buss, just ahead to the equipment's on/off switch, and set this jumper at the "Manual" position. The HIGH and LOW alarm channels may be independently set for either "Automatic" or "Manual" reset (selecting automatic reset also necessarily provides for automatic reset at power-up).

The controller's relay outputs are plainly marked ...

AUX: ALARM/COM/NORM
LOW LIMIT: LOW/COM/NORM
HIGH LIMIT: HIGH/COM/NORM.



These SPDT contacts will handle up to 10-amps at 250vac. During periods of normal operation, these contacts will be closed (COM to NORM). When out-of-limits conditions occur, the appropriate contacts will switch to the opposite state (COM to ALARM), (COM to LOW), or (COM to HIGH). Use these contacts to signal remote alarm devices, to disable cooling and heating systems, to shut-off power to "live loads", etc.


OPERATION

The limit temperatures can be set by depressing either the HIGH LIMIT or LOW LIMIT display select button, then turning the respective set point adjustment as necessary to provide the desired indication. When either limit display button is pressed, the selected parameter will be held for approximately 30-seconds, then the display will automatically return to the temperature-indicating mode. The indicator can be manually returned to the measured temperature by pressing the TEMP button.

When power is first applied, the controller will start-up in the "LIMIT" mode. Its red HIGH LIMIT and green LOW LIMIT indicators will flash on and off, and the audible alarm will sound. To start the equipment, press both RESET buttons. If the measured temperature is within the set limits, the indicators and audible alarm will be switched off, and the outputs will be enabled (units set for automatic reset will start up automatically).

If desired, automatic power-up reset operation may be selected via a jumper on the output board. When the feature is used, the limit indicators will flash on momentarily when power is first applied, and will then automatically assume the normal reset condition.

During all periods of normal operation, the alarm indicators and the audible warning device will remain off, and the system will be enabled by the controller's outputs. If the measured temperature ever exceeds a limit setting, the controller will immediately switch to the LIMIT mode. The flashing red or green indicator will then be enabled, the audible warning will sound, and the associated output will be disabled. When the temperature has returned to an acceptable level, press the lighted reset button to return to normal operation. In the meantime, the audible warning signal can be turned off by depressing the SILENCE button.

Independent automatic reset operation is available for both the HIGH and LOW channels, via jumpers on the output board. When used, the alarms will return to the normal status as soon as the measured temperature returns to within limits. Note that the selection of automatic reset inherently provides power-up reset for that channel. It is not possible to set the jumpers to provide automatic reset on both limit channels, with manual reset on power-up.


CIRCUIT ANALYSIS

Please refer to schematic diagrams Drawings No. 470580 and 470581



The schematic diagrams Dwg Nos. 470580 and 470581 are available for download as a single self-extracting archive (733KB) containing two overlapping diagrams. These may be printed on 8.5" x 11" paper using ordinary printers and commonly available graphics shareware such as LViewPro or Graphics Workshop.

You may also view these schematic diagrams immediately by opening them in your browser's window ...

Dwg No 470580
Dwg No 470581
left half (198KB)
left half (132KB)
right half (240KB)
right half (147KB)

Most browsers will add these files to their cache, and you should then be able to retrieve them from that folder and save them for future reference, if desired. Layout diagrams for each printed circuit board are provided in the Parts List section, which appears below.


Measuring Circuit

The controller's temperature measuring circuit, U3a and its associated circuitry, converts the low level thermocouple input to a scaled and compensated high level analog voltage. The sensor, "mj" (measuring junction) is connected to U3-11, the input of this amplifier. C1 provides low pass filtering for this input. The controller is designed to measure temperatures over the range of -125°F to +375°F, using a type T (copper vs constantan) thermocouple. Over this temperature range the sensor produces emf's ranging from -3.006mV to +8.787mV. This input is amplified and scaled to provide a 0v to +5.0v analog output at U3-6. To achieve this, the gain of the amplifier is set by R6, R8 and R9 at 424.

This non-inverting amplifier will always settle at the point where the potential at its inverting input, U3-10, is exactly equal to its input, U3-11. This condition is established by a feedback current, passed from the output, U3-6, through R8 and R9 to the amplifier's inverting input. For a given input, the magnitude of the feedback current required to establish this balance is a function of R6. Having established that, the magnitude of the amplifier's output voltage then becomes a function of the feedback resistors, R8 and R9. The resistor values used permit the gain to be set exactly at 423.98, with a calibration range of about +/-2% to accommodate all tolerances.

Thermocouple circuits necessarily involve a second junction, sometimes called the "reference junction". This junction, shown as "rj" on the schematic, has the same "emf vs temperature" characteristic as the sensor. It occurs in series with the sensor's emf, with the opposite polarity. The emf produced by the "rj" junction is algebraically summed with the sensor emf, so any variation of the ambient temperature directly affects the measurement.

U1, R1 and R2 provide reference junction compensation, which minimizes errors due to variations in ambient temperature. U1 is an integrated circuit temperature sensor, which produces an output proportional to its absolute temperature. This output varies 10mV/°C, and is scaled by R2 to produce a feedback current through R8 and R9 which will be approximately equal and opposite to that being caused by the influence of the reference junction. At room temperature, the emf produced at rj varies about 40.7uV/°C which, in turn, produces a feedback current of about 40.7nA through R2. A 1°C ambient temperature change will also result in a 10mV variation at U1. This will produce a -41nA change in the total feedback current, which approximately cancels out the shift produced by rj.

U2, R3, R4 and R5 provide a means of shifting the amplifier's output to zero with a -125°F input at "mj". U2 is a precision voltage reference integrated circuit, which provides a stable +6.9v at its junction with R3 and R4. At -125°F, the mj input will be -3.006mV. Assuming a 25°C ambient temperature, the emf produced by rj will be about +0.992mV, so the net input will be about +3.998mV, producing an offset of about +1.7 volts at U3-6.

Meanwhile, the voltage at the U1, R1 node varies with absolute temperature by 10mV/°K, and will therefore be about +2.98v (0C = 273°K). This produces a compensator-related offset at U3-6 of about -5.2 volts.

U3 is a precision op amp, with negligible offsets, so the total value of the offsets is therefore about -3.5 volts. To shift the output level back to zero, R5 is adjusted so that the zero network injects a current into the feedback node which is about equal and opposite to that caused by the total offsets; about -3.5v/422.98°K = -8.3uA.


Linearizer Circuit

The "emf vs temperature" response of the thermocouple temperature sensor is highly nonlinear, varying from 16.6uV/°F at -125°F to 29.2uV/°F at +375°F. To provide a highly accurate digital temperature read-out, U3b and U6 converts the nonlinear 0/-5.00v measuring circuit output (U3-6) to a linear analog at U3-13. The linear analog has a range of 0/+5.00v (slope = 10mV/°F).

A "piecewise" linearizing strategy is used, which breaks down the output at U3-6 into five segments. The apparent gain of the inverting buffer, U3b, is readjusted as necessary to produce a linear 10mV/°F slope within each segment. For example, the non-inverting input, U6-5, is held at +3.752 volts by the voltage divider R14 - R18. With the R11/R12 node at any higher level, U6-7, and all the other outputs of U6, will be at the negative saturation limit. Because of the diodes CR1 through CR4, U6 makes no contribution to the output under these circumstances.

As the temperature decreases, the R11/R12 node drops below the +3.752 volt threshold (U3-13 = +3.843v), U6-7 swings to +3.752 volts plus the diode drop, acting like a dc buffer which sets U6-6 at +3.752 volts. This produces a small current in R19. Since the other three linearizer stages are still off, this current is provided from the output U3-13, through R12. In order to provide this additional current, U3-13 drops to a slightly less positive level than would otherwise be required to satisfy the normal R10 feedback requirement.

As the temperature continues to fall, the voltage at the R11/R12 node decreases. This increases the linearizer current, which increases the resulting offset factor in the U3-13 output. When the R11/R12 node falls to +2.757 volts, the next linearizer stage is enabled, increasing the rate of curve correction. By increasing the slope-compensating action as the measured temperature decreases, the linearizer converts the sensor's "curve" to a constant 10mV/°F slope.

Without linearization, measuring errors as large as 33.3°F could result. The theoretical maximum error of this linearization scheme is -1.7°F occurring at -76°F.


Scaling Circuit

The indicator A/D converter is basically a digital millivolt meter. The 0/+5.00v output provided at U3-13, and the limit set point analog voltages from R70 and R71, must therefore be converted to -125mV/+375mV to provide a "-125°F" to "+375°F" display. The scaling circuit also converts these analog voltages to equivalent Celsius (°C) values.

Analog switch U7 multiplexes the analogs into buffer input U8-3. The output of this buffer is connected to two voltage dividers. The R23 - R25 divider converts the 5-volt analog to a 0/500mV analog, representing the 500°F span. The R26 - R29 divider converts the 5-volt analog to a 0/278mV analog, representing the equivalent 278°C span. Either the "°F" or the "°C" analog is selected by U9, is buffered, then applied to R35, an input to an inverting unity gain amplifier. The inverted output, U8-8, is then applied to R37, the input of a second inverting buffer.

At this circuit, the analog is summed with an offsetting voltage selected by two additional sections of U9. In the "°F" display mode, R31 and R32 injects +12.5uA into the feedback node, which shifts the output at U8-14 in the negative direction by exactly 125mV. This provides a "-125" read-out when the analog is at zero volts. In the "°C" display mode, an offsetting current of +8.72uA is provided by R33 and R34, to provide -87.2mV at U8-14 (-125°F = -87.2°C).

The "display blank" input to R28 is taken from the CR8/CR9 junction at U19, and is normally open since the diodes are normally reverse biased. Certain sensor faults cause U19 to forward bias one of these diodes, imposing a -13.3v potential on R28. This forces U8-14 to at least +2.5v, which activates the over-range function of the A/D converter, producing a flashing "0" display.


DVM Circuit

The scaled and level-shifted analog voltage at U8-14 is applied to the input of DVM circuit, U12, through low pass filter R39 and C16. U12 is a dual-slope 4-1/2 digit A/D converter which provides a multiplexed BCD output to operate a digital display system. The least significant digit, D1, is not used in this application. Peripheral circuitry includes U10, which provides a 100kHz reference frequency for the converter, U11 which provides a -5v supply for the DVM chip, and U13, which provides a +1.000v reference voltage.

The BCD, digit and polarity outputs from U12 are connected to the display circuitry. The BCD inputs to U27, a BCD/7-segment converter, are set up as required to display the appropriate number in each digit position, while the display digits are simultaneously scanned from D4 to D2 (D1 is not used).

U28 through U31 provide a zero-blanking function for the first two digits, while the LSD is driven directly with no blanking provisions. One degree is therefore displayed as "1", rather than "001". When all the BCD lines are at zero, U28-1 will be high. U28-13 will therefore be low, preventing the "D4" pulse from being gated through U29-3. If any BCD line is high, these logic levels will be reversed. When D4 goes high, U29-11 goes high, which enables digit driver transistor, Q16. D4 is also gated into U30-3, clocking this D-type flip-flop circuit. If the BCD lines are all zero for D4, a high logic level is clocked through to the Q output, U30-1. Then, if the lines are also all zero for D3, U31-3 will be low, preventing the D3 pulse from being gated through to the digit driver transistor, Q17. Again, if any one of the BCD lines is high during the D3 time, the second digit will be enabled.


Display Mode Selector Circuitry

The digital display system is used to read-out the high and low limit set points as well as the measured temperature value, and can display all values in either °F or °C. The display mode is selected by the circuitry composed of U14 through U17.

U14 is a dual timer. When the high limit display button is pressed, its timer is triggered and provides a high output (H) at U14-6. This enables the "High Limit" indicator, DS1, and analog gate U7-3. If the low limit timer was active when the high limit button was pressed, it will be reset by U15-9. A high output from either timer disables the temperature display line (T) by forcing U16-9 to go low. The timers will hold the display for 30-seconds, after which the display automatically returns to the measured temperature.

U17 is a simple manual set-reset flip-flop, which selects either the °F or °C range, operating the analog gates of U9 in the scaling circuit accordingly.


Alarm Circuitry

U19 provides a system of comparators which monitors the measured temperature with respect to high and low limit settings, and for "reasonableness". U18 provides a precision +6.9v reference for the limit set points, R70 and R71. These set point outputs provide one input to their respective comparator circuits, while the 0/+5.00v temperature analog voltage is connected to the other inputs. When the analog voltage is less than the high limit set point, and greater than the low limit set point, both U19-14 and U19-8 will be low. U20-11 and U20-10 will therefore be high.

Furthermore, when the analog voltage is greater than -0.06v, but less than +5.06v (i.e., temperature within the range of -131F to 381F), U19-1 and U19-7 will both be high, and U23-4 will therefore also be high.

Pressing both reset buttons, S6 and S7, forces U20-4 and U20-3 high. With all three inputs high, U21-6 and U21-9 go low. This disables both the high limit and low limit indicators, and latches U20-4 and U20-3 at the high level, enabling the output transistors, Q7 and Q10. This is the normal operating status.

In the event that the temperature strays outside of the set range, either the high limit or low limit will be tripped, and the above status for that limit will be reversed; the indicator will be on and output transistor off. The indicators are gated by a flasher signal provided from U24-11.

When neither limit is tripped, U24-3 will be low. U26-10 and U25-11 will therefore both be low, holding both the audible warning device (beeper) and the SILENCED indicator off. When either on (or both) of the limits are tripped, U24-3 goes high. This enables the audible warning device, but not the SILENCED indicator. Pressing S8 forces U25-3 high. U25-10 then goes low, which latches the beeper off, and the SILENCED indicator on. Both the beeper and the SILENCED indicator are also modulated by the flasher signal.

At power on, U23-1 is initial held low as C41 begins to charge. This trips both limits and toggles the sensor fault indicator. A momentary loss of power will therefore trip both limits. An open sensor connection will cause the measuring circuit to provide abnormal analog voltage levels and toggle either U19-1 or U19-7. A flashing SENSOR warning signal via Q13, and both limits will also be tripped.


Power Supply Circuits

Power for the controller can be taken from either 110/120vac or 208/240vac, 50/60 Hz lines.

The controller circuit uses +15v, -15v and +5.1v dc voltages. The +/-15v levels are provided by T1 and its associated bilateral full-wave rectifier circuit. Regulators U33 and U34 stabilize these supply voltages at the required +15v and -15v levels. A separate +5.1v supply is provided for the controller's logic and display circuitry by T2 and regulator U32. All three of these supplies are adjustable, and are set precisely at the 15v and 5.1v levels.


Output Circuitry

The Q7, Q10 and Q26 open-collector outputs are connected to operate mechanical relays K1, K2 and K3, and their associated LED indicators on the relay output board. These relays provide separate 1P2T contacts capable of switching 10-amps at 250vac. The relays are de-energized by abnormal operating conditions (AUX <- COM), (LOW <- COM) and (HIGH <- COM).


Handling Electrical Interference

When used in the manually reset mode, this device becomes a latching mechanism. Momentary bursts of stray electrical energy, which would normally constitute nothing more than a transient disturbance for other non-latching electronic instruments, may cause this device to latch its load circuit off. Electrical interference, or "noise", is therefore a matter for special attention in the application of latching electronic limit controllers.

Although this control has been designed to provide a relatively high level of immunity to stray electrical energy, it is not possible to provide for 100% rejection of any noise frequency, waveforms or amplitude. A few application hints are therefore offered for cases where noise problems occur, or are anticipated:

  1. Never ground the sensor, or use grounded-sheath type sensors.
  2. .If possible, do not run the sensor cable through conduits or cable trays with switched current-carrying conductors. If it is not possible to separate sensor cables and power wiring, used shielded thermocouple extension cable, connecting the shield to ground (the electrical panel) at the controller's chassis (do not ground the shield on the sensor end).
  3. Transient electrical signals can be conducted into the controller through its power wiring. It is therefore good practice to take power for this device directly from the source (typically the control power step-down transformer), rather than from a "daisy chain" bus connection. As with the sensor cable, the power supply leads can also pick up stray electrical signals from adjacent wiring serving switched inductances (relay coils, etc.). If the controller can not be mounted close enough to the power source to permit a short, separate hook-up, twisting its "line" and "common" hook-up wires is recommended as a means of minimizing such pick-up. In extreme cases, use two-wire shielded control cable for the power connection.
  4. 4. As a general rule, electrical interference is best treated at its source. A simple RC snubber network (typically .047uF in series with 100) connected across the terminals of a troublesome switch, relay coil or motor, will provide an easy and totally effective solution, whereas it may be next to impossible to achieve the same result by altering the controller's hook-up wiring or internal circuitry.



Field Calibration Procedure

A ZERO TRIM potentiometer is provided on the back of the controller to permit easy compensation for minor offsets due to aging and sensor anomalies. Most calibration problems will be zero offsets which are correctable here.

The regular ZERO and SPAN are provided on the controller's top circuit board, and are accessible through ports in the internal cover plate.

To trim these adjustments …

  1. disconnect the sensor cable and connect a portable potentiometer or millivolt source to the (+) and (-) terminals.
  2. Set the input at "-125°F" or its equivalent emf. Adjust the ZERO trimmer to provide an indication of exactly "-125°F" or "-87°C" on the digital display.
  3. Likewise, set the input at "+375°F" or its equivalent emf, and adjust the SPAN trimmer to provide a digital indication of exactly "+375°F" or "+191°C".

This procedure normally results in a calibration accuracy of +/-1% of Span, which will normally be sufficient for limit switch operation. For closer calibration, refer to the more detailed bench procedure, which follows.


Test Bench Calibration Procedure

Remove the internal cover panel to gain access to the various trimmers referred to below, then refer to circuit board layout Drawing No. 470582 and perform the following adjustments.


Please allow at least 10-minutes after applying power for
circuit temperatures to stabilize prior to final calibration.
Also please note that unrestricted air flow through and around
the unit may produce abnormal temperature gradients in the
measuring circuitry, which can degrade the accuracy of the
calibration effort (vis., avoid drafts).



  1. Connect a digital voltmeter (DVM) between the right-hand pin of U34, and ground on the (+) (or front) side of C66. Adjust the "-15v" trimmer, R124, to provide an indication of exactly -15.0v.
  2. Connect the DVM (+) lead to the center pin of U33. Adjust the "+15v" trimmer, R120, to provide an indication of exactly +15.0v.
  3. Connect the (+) lead to U9-14. Adjust the "+5.1v" trimmer on the bottom board (accessible through the hole in the top board) to provide an indication of exactly +5.1v.
  4. Reset and trip the limits to provide an audible warning. Adjust the "Tune" trimmer, R96 on the bottom board (accessible through the hole in the top board) to find the peak audible output.
  5. Connect the (+) lead to the left-hand end of R47. Adjust the "Vref" trimmer, R48, to provide an indication of exactly +1.000v.
  6. Connect a frequency counter between U12-22 ("*" position) and ground. Adjust the "Osc" trimmer, R42, to provide a clock frequency of exactly 100kHz (period = 10.000S).
  7. Turn the low limit all the way counterclockwise, and the high limit fully clockwise.Connect the DVM (+) lead to U8-1. Select the LOW LIMIT display mode, then adjust the "-125°F" trimmer, R32, for a read-out of exactly -125°F, and the "-87°C" trimmer for an indication of exactly -87°C.
  8. Select the HIGH LIMIT display mode, then adjust the "SP Span" trimmer, R68, to provide an indication of exactly +5.00v. Next, adjust the "F Span" trimmer, R24, to provide a display indication of exactly 375F, then adjust the "C Span" trimmer, R27 to display exactly 191C.
  9. Disconnect the sensor, and connect a compensated portable potentiometer or precision mV source to the input terminals of the controller. Set the input at "-125°F" or -3.006mV. With the DVM still connected between U8-1 and ground, adjust the "Zero" trimmer, R4, to provide a DVM indication of exactly 0.00v.
  10. Set the input at "+375F" or +8.787mV, and adjust the "Span" trimmer, R8, to provide an indication of exactly +5.00v.
  11. Check the limit accuracy, and the operation of the associated lights and relay contacts. Set the input at about "+300F", and slowly reduce the HIGH LIMIT setting. When the displayed setting falls just below "300", the high limit alarm should trip. Press the SILENCE button and observe that the audible warning is canceled. Reset the high limit, and check the LOW LIMIT in a similar manner.
  12. When properly calibrated, the average indication accuracy for all points within the -125F/+375F (-87C/+191C) range should be within +/-0.25% of Span. When complete, replace the internal cover panel.



PARTS LIST

This section of the handbook includes parts lists for each major assembly and repairable subassembly. This lists are arranged by part number, as indicated in the table of contents. Each list includes a component layout drawing, which physically located most items.

Every item used in an assembly is identified in its parts list. The various parts are listed by part number. The six-digit part numbering system has a logical order, which is summarized as follows:

Class Codes
Items Covered
000000 - 049000
   Major Assemblies & Subassemblies
050000 - 099000
   Electronic Component Parts
100000 - 139000
   Electromechanical Parts
140000 - 169000
   Optical Parts, Sensors
170000 - 199000
   Wiring & Wiring Hardware
200000 - 209000
   Printed Circuit Boards
210000 - 259000
   Electrical Parts & Hardware
260000 - 289000
   Mechanical Hardware
290000 - 329000
   Fluidic (Pneumatic) Parts & Hardware
330000 - 399000
   Mechanical & Structural Parts
400000 - up
   Drawings, Publications & Literature



Since the manufacturer's name and part number are often printed on purchased parts, this information is included in the parts lists to help you properly identify the item in question. Purchased parts are often provided by alternate sources however, so this information should be taken as representative, rather than absolute.





Part Number: 012011
Drawing Number: 470606

"TempSentry" BI-DIRECTIONAL TEMPERATURE LIMIT CONTROLLER

PART #
DESC
MFGR
MFGR'S NO
QTY
UM
048048 ANALOG PCB ASSY, FRT WRNR 048048/470582
1
EA
048049 DIGITAL PCB ASSY, FRT WRNR 048049/470583
1
EA
048050 DVM PCB ASSY, FRT WRNR 048050/470584
1
EA
048051 CONTROL PANEL PCB ASSY, FRT WRNR 048051/470585
1
EA
048070 RELAY OUTPUT PCB ASSY WRNR 048070/470734
1
EA
142001 FILTER, RED DISPLAY WRNR 470509
1
EA
251018 INSULATOR, FRT WRNR 251018/470683
1
EA
266002 STICK MOUNT, GRN MEIJ
1
EA
271026 SCREW, BDR HD 6-32x.250 SSUP
7
EA
271028 SCREW, BDR HD 6-32x.500 SSUP
2
EA
271259 SCREW, TRUS HD 6-32x.250
8
EA
272041 WASHER, NYLON PLAIN #6 REG KEYS 3163
1
EA
279022 SPACER, M-F TYPE 6-32x1.25 KYST 1955
5
EA
279024 SPACER, M-F TYPE 6-32x.313 SMTH 8249
2
EA
351030 BEZEL, FRT WRNR 351030/470590
1
EA
351048 CHASSIS, FRT WRNR 351048/470738
1
EA
352052 MOUNTING CLAMP WRNR 352052/470602
2
EA
352056 COVER PLATE, INTERNAL WRNR 352056/470694
1
EA
353056 COVER, FRT WRNR 353026/470694
1
EA




Part Number: 048048
Drawing Number:
470582

"TempSentry" ANALOG PCB ASSY

PART #
DESC
MFGR
MFGR'S NO
QTY
UM
051035 RESISTOR, COMP 1/4W 5% 27ROHM RC07GF270J 1
EA
051049 RESISTOR, COMP 1/4W 5% 100ROHM RC07GF101J 1
EA
051076 RESISTOR, COMP 1/4W 5% 1.3KROHM RC07GF132J 1
EA
051082 RESISTOR, COMP 1/4W 5% 2.4KROHM RC07GF242J 1
EA
051083 RESISTOR, COMP 1/4W 5% 2.7KROHM RC07GF272J 2
EA
051095 RESISTOR, COMP 1/4W 5% 8.2KROHM RC07GF822J 2
EA
051096 RESISTOR, COMP 1/4W 5% 9.1KROHM RC07GF912J 1
EA
051099 RESISTOR, COMP 1/4W 5% 12kROHM RC07GF123J 1
EA
051106 RESISTOR, COMP 1/4W 5% 24KROHM RC07GF243J 3
EA
051107 RESISTOR, COMP 1/4W 5% 27KROHM RC07GF273J 1
EA
051113 RESISTOR, COMP 1/4W 5% 47KROHM RC07GF473J 2
EA
051121 RESISTOR, COMP 1/4W 5% 100KROHM RC07GF104J 5
EA
052209 RESISTOR, FILM 1/8W 1% 121ROHM RN55D1210F 1
EA
052237 RESISTOR, FILM 1/8W 1% 237ROHM RN55D2370F 1
EA
052238 RESISTOR, FILM 1/8W 1% 243ROHM RN55D2430F 1
EA
052271 RESISTOR, FILM 1/8W 1% 536DIGI 536X 1
EA
052278 RESISTOR, FILM 1/8W 1% 634ROHM RN55D6340F 1
EA
052288 RESISTOR, FILM 1/8W 1% 806ROHM RN55D8060F 1
EA
052295 RESISTOR, FILM 1/8W 1% 953ROHM RN55D9530F 1
EA
052301 RESISTOR, FILM 1/8W 1% 1.00K DIGI1.0KX 2
EA
052306 RESISTOR, FILM 1/8W 1% 1.13K ROHMRN55D1131F 1
EA
052309 RESISTOR, FILM 1/8W 1% 1.21K ROHMRN55D1211F 1
EA
052313 RESISTOR, FILM 1/8W 1% 1.33K ROHMRN55D1331F 1
EA
052321 RESISTOR, FILM 1/8W 1% 1.62K DIGI1.62KX 1
EA
052327 RESISTOR, FILM 1/8W 1% 1.87K ROHMRN55D1871F 1
EA
052337 RESISTOR, FILM 1/8W 1% 2.37K ROHMRN55D2371F 1
EA
052340 RESISTOR, FILM 1/8W 1% 2.55K ROHMRN55D2551F 1
EA
052369 RESISTOR, FILM 1/8W 1% 5.11K ROHMRN55D5111F 1
EA
052393 RESISTOR, FILM 1/8W 1% 9.09K DIGI9.09KX 1
EA
052395 RESISTOR, FILM 1/8W 1% 9.53K ROHMRN55D9531F 1
EA
052396 RESISTOR, FILM 1/8W 1% 9.76K ROHMRN55D9761F 1
EA
052401 RESISTOR, FILM 1/8W 1% 10.0K ROHMRN55D1002F 6
EA
052406 RESISTOR, FILM 1/8W 1% 11.3K ROHMRN55D1132F 1
EA
052412 RESISTOR, FILM 1/8W 1% 13.0K ROHMRN55D1302F 1
EA
052439 RESISTOR, FILM 1/8W 1% 24.9K ROHMRN55D2492F 1
EA
052528 RESISTOR, FILM 1/8W 1% 191KROHM RN55D1913F 1
EA
052538 RESISTOR, FILM 1/8W 1% 243KROHM RN55D2433F 1
EA
052543 RESISTOR, FILM 1/8W 1% 274KROHM RN55D2743F 1
EA
052552 RESISTOR, FILM 1/8W 1% 340KROHM RN55D3403F 1
EA
052554 RESISTOR, FILM 1/8W 1% 357KDIGI 357KX 1
EA
054003 POTENTIOMETER, TRIM 1T-3/8 50BRNS 3386P-1-500 1
EA
054004 POTENTIOMETER, TRIM 1T-3/8 100BRNS 3386P-1-101 1
EA
054005 POTENTIOMETER, TRIM 1T-3/8 200BRNS 3386P-1-201 1
EA
054006 POTENTIOMETER, TRIM 1T-3/8 500BRNS 3386P-1-501 1
EA
054007 POTENTIOMETER, TRIM 1T-3/8 1KBRNS 3386P-1-102 2
EA
054010 POTENTIOMETER, TRIM 1T-3/8 10KBRNS 3386P-1-103 1
EA
054011 POTENTIOMETER, TRIM 1T-3/8 20KBRNS 3386P-1-203 3
EA
054013 POTENTIOMETER, TRM 1T-3/8 100KBRNS 3386P-1-104 1
EA
062060 CAPACITOR, CRMC 25V .01uF MOUS25FG010 3
EA
062067 CAPACITOR, CRMC 25V 0.1uF SPRGHY-850 9
EA
063013 CAPACITOR, TANT 35V 1.0uF MOUS551-1.0M35 13
EA
063045 CAPACITOR, TANT 25V 10uF MOUS551-10M25 6
EA
067054 CAPACITOR, FILM 100V 0.47uF THOM581-MC474K1F 1
EA
067058 CAPACITOR, FILM 100V 1.0uF THOM581-MC105K1H 2
EA
067069 CAPACITOR, FILM 400V 0.001uF WEST160/.001/K/1k/C 1
EA
081001 DIODE, SIG MOUS 333-1N4148 9
EA
081015 DIODE, SIGNAL LOW iR SPC 1N457 2
EA
091002 IC, HEX INVERTER RCA 570-CD4069UBE 1
EA
091013 IC, QUAD BILATERAL SWITCH RCA 570-CD4066BE 2
EA
093002 IC, QUAD OP AMP SGS 511-LM324N 2
EA
093010 IC, ADJ POS 1.5A REGULATOR SGS 511-LM317T 1
EA
093011 IC, +12V 100mA REGULATOR NEC 551-UPC78L12 1
EA
093012 IC, -12V 100mA REGULATOR NS LM79L12ACZ 1
EA
093013 IC, ADJ NEG 1.5A REGULATOR NS LM337T 1
EA
093016 IC, PRECISION 6.9V REFERENCE NS LM329DZ 1
EA
093017 IC, PRECISION 2.5V REFERENCE NS LM336Z-2.5 3
EA
093026 IC, -5V 100mA REGULATOR NS LM79L05ACZ 1
EA
093030 IC, DUAL PRECISION OP AMP LT OP227GN 1
EA
093032 IC, PRECISION QUAD OP AMP LT LT1014DN 1
EA
094001 IC, DISPLAY D/A CONVERTER ITSL ICL7135CPI 1
EA
173003 HEADER, RA/SR MALE 36-W APT 929835-01-36 33
EA
175002 SOCKET, IC, 14 PIN SOLDER TAIL TIC 8914-01 7
EA
175005 SOCKET, IC 28-PIN SOLDER TAIL DIGI C8928 1
EA
271014 SCREW, BDR HD 4-40x.250 SSUP 2
EA
273002 LOCKWASHER, HELIC #4 REG SSUP 2
EA
274002 NUT, HEX 4-40 SSUP 2
EA




Part Number: 048049
Drawing Number:
470583

"TempSentry" DIGITAL PCB ASSY

PART #
DESC
MFGR
MFGR'S NO
QTY
UM
051082 RESISTOR, COMP 1/4W 5% 2.4KMOUS 29SJ250-2.4K 3
EA
051089 RESISTOR, COMP 1/4W 5% 4.7KMOUS 29SJ250-4.7K 1
EA
051106 RESISTOR, COMP 1/4W 5% 24KMOUS 29SJ250-24K 2
EA
051129 RESISTOR, COMP 1/4W 5% 220KMOUS 29SJ250-220K 1
EA
051145 RESISTOR, COMP 1/4W 5% 1.0MMOUS 29SJ250-1.0MEG 1
EA
051147 RESISTOR, COMP 1/4W 5% 1.2 M ROHMRC07GF125J 1
EA
051156 RESISTOR, COMP 1/4W 5% 3.0 M ROHMRC07GF305J 2
EA
052238 RESISTOR, FILM 1/8W 1% 243ROHM RN55D2430F 1
EA
052282 RESISTOR, FILM 1/8W 1% 698ROHM RN55D6980F 1
EA
054004 POTENTIOMETER, TRIM 1T 100BRNS 3386P-1-101 1
EA
054042 POTENTIOMETER, CONT 1T-5/8 5KA-B 73N1N056S502W 2
EA
056001 VARISTOR, 31VDC 180MJ GE V39MA2B 4
EA
062060 CAPACITOR, CRMC 25V .01uF MOUS21FG010 10
EA
062067 CAPACITOR, CRMC 25V 0.1uF MOUS21FG100 4
EA
063013 CAPACITOR, TANT 35V 1.0uF MOUS551-1.0M35 9
EA
063045 CAPACITOR, TANT 25V 10uFMOUS 551-10M25 4
EA
064004 CAPACITOR, ELEC 35V 470uF PANAP6255 2
EA
064016 CAPACITOR, ELEC 16V 4700uF PANAP6900 1
EA
062072 CAPACITOR, MONO 100V .1uFTECA 92R2A104K 1
EA
071005 TRANSFORMER, PWR 34vct/170MA SGNLLP34-170 1
EA
071006 TRANSFORMER, PWR 16vct/350MA SGNLLP16-350 1
EA
081002 DIODE, RECT 200V 1A MOUS 333-1N4002 6
EA
083021 TRANSISTOR, NPN GENL PURPOSE MOUS 333-KN3904 5
EA
091001 IC, QUAD SCHMIT NAND RCA 570-CD4093BE 6
EA
091008 IC, QUAD 2-INPUT NAND GATE RCA 570-CD4011BE 1
EA
091011 IC, TRIPLE 3-INPUT NAND GATE RCA 570-CD4023BE 1
EA
091012 IC, TRIPLE 3-INPUT NOR GATE RCA 570-CD4025BE 1
EA
091016 IC, TRIPLE 3-INPUT AND GATE RCA 570-CD4073BE 1
EA
092005 IC, DUAL MONOSTABLE RCA 570-CD4538BE 1
EA
093010 IC, ADJ POS 1.5A REGULATOR SGS 551-LM317T 1
EA
173003 HEADER, RA/SR MALE 36-W APT 929648-01-36 42
EA
173006 RECEPTACLE, STR/SR 36-W APT 929850-01-35 16
EA
175002 SOCKET, IC, 14 PIN SOLDER TAIL TI C8914 10
EA
175003 SOCKET, IC 16-PIN SOLDER TAIL TI C8916-01 1
EA
271015 SCREW, BDR HD 4-40x.375 1
EA
273002 LOCKWASHER, HELIC #4 REG 1
EA
274002 NUT, HEX 4-40 1
EA




Part Number: 048050
Drawing Number:
470584

"TempSentry" DVM PCB ASSY

PART #
DESC
MFGR
MFGR'S NO
QTY
UM
051053 RESISTOR, COMP 1/4W 5% 150ROHM RC07GF151J 8
EA
051087 RESISTOR, COMP 1/4W 5% 3.9KROHM RC07GF392J 3
EA
051097 RESISTOR, COMP 1/4W 5% 10KROHM RC07GF103J 1
EA
051113 RESISTOR, COMP 1/4W 5% 47KROHM RC07GF473J 1
EA
054041 POTENTIOMETER, CONT 10KALPH V24PV25SB10K 2
EA
062041 CAPACITOR, DISC 1000V 0.001uF SPRG5GA-D10 1
EA
062060 CAPACITOR, CRMC 25V .01uF MOUS21FG010 4
EA
063013 CAPACITOR, TANT 35V 1.0uF SPRG199D105X0035AA1 1
EA
083021 TRANSISTOR, NPN 2N3904 NSKN3904 4
EA
091001 IC, QUAD SCHMIT NAND RCA 570-CD4093BE 1
EA
091008 IC, QUAD 2-INPUT GATE RCA 570-CD4011BE 1
EA
091009 IC, DUAL 4-INPUT NOR GATE RCA 570-CD4002BE 1
EA
091010 IC, DUAL D FILP/FLOP RCA 570-CD4013BE 1
EA
092011 IC, BCD/7-S DECODER/DRIVER RCA 570-CD4511BE 1
EA
125001 DISPLAY, .43" DIGIT RED (CC) NS 5082-7653 4
EA
173003 HEADER, RA/SR MALE 36-W APT 929648-01-36 16
EA
173006 RECEPTACLE, STR/SR 36-W APT 929850-01-36 30
EA
175002 SOCKET, IC, 14 PIN SOLDER TAI TI C8914 4
EA
175003 SOCKET, IC 16-PIN SOLDER TAIL TI C8916-01 1
EA
279001 STANDOFF, SWAGE TYPE 6-32x1/4 KYST 1591-2 2
EA




Part Number: 048051
Drawing Number:
470585

"TempSentry" CONTROL PCB ASSY

PART #
DESC
MFGR
MFGR'S NO
QTY
UM
051059 RESISTOR, COMP 1/4W 5% 270MOUS 29SJ250-270 9
EA
051073 RESISTOR, COMP 1/4W 5% 1.0KROHM RC07GF102J 1
EA
051082 RESISTOR, COMP 1/4W 5% 2.4KROHM RC07GF242J 8
EA
051087 RESISTOR, COMP 1/4W 5% 3.9KMOUS 29SJ250-3.9K 10
EA
083021 TRANSISTOR, NPN 2N3904 MOUSKN3904 10
EA
102010 SWITCH, PB PCB SHDW 200130 8
EA
109005 KEY CAP, GRY 1-LED SHDW 71077 8
EA
121003 LED, MIN RED DIFF T1 ROHM SLH-34-VR3 2
EA
121009 LED, MIN YLW DIFF T1 ROHM SLH-34-YY3 6
EA
121003 LED, MIN RED DIFF T1 ROHM SLH-34-MG3 1
EA
124001 SOUND TRANSDUCER MURA PKM22EPP-4001 1
EA
173006 RECEPTACLE, STR/SR 36-W APT 929850-01-36 22
EA




Part Number: 048053
Drawing Number:
470734

"TempSentry" RELAY OUTPUT PCB ASSY

PART #
DESC
MFGR
MFGR'S NO
QTY
UM
051047 RESISTOR, CFLM 1/4W 5% 68MOUS 29SJ250-68 3
EA
054012 POTENTIOMETER, TRM 1T-3/8 50KBRNS 3386P-1-503 1
EA
081003 DIODE, RECT 400V 1A SPC 1N4004 3
EA
093029 IC, TEMP SENSOR NS LM335Z 1
EA
111004 COVER, MIN PCB RELAY P&B 35C620 3
EA
111005 RELAY, MIN PCB 24V 1P2T P&B T90N5D1224 3
EA
121003 LED, T1 MIN DIFF REDROHM SLR-33 UR3 3
EA
173002 SHUNT, 2-CKT .1 CTRS APT 929950-00 4
EA
173005 HEADER, STR MALE 3-W AMP 4-103321-0 4
EA
176006 TERMINAL BLOCK, PCB 3-W PHNX 1715035 4
EA
176007 TERMINAL BLOCK, PCB 2-W PHNX 1715022 2
EA







FireRight Controls /Warner Instruments
1320 Fulton Street Box 604
Grand Haven, Michigan 49417-0604 USA
Phone: (616) 842-7658
FAX: (616) 842-1471
e-mail: info@fireright.com
Internet: http://www.fireright.com




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Page Last Revised on March 29, 1998
©Copyright Warner Instruments 1996 ~ 1998